encode_unicode

Alternative and extension to to the unstable char.encode_utf8() and char.encode_utf16().

The goal was to fill in those methods for stable via a trait, but that didn't work since the methods already exist; they're just un-callable.

Contains:

• Utf8Char: A char stored as UTF-8. Can be borrowed as a str.
• Utf8Iterator: Iterate over or read the bytes of an UTF-8 codepoint.
• Utf16Char: A char stored as UTF-16. Can be borrowed as a u16 slice.
• Utf8Iterator: Iterate over the units of an UTF-16 codepoint.
• Conversion methods on char:
  • to UTF-8 as [u8; 4] or into &mut[u8]. and vice versa.
  • to UTF-16 as (u16, Option<u16>) or into &mut[u16]. and vice versa.
• Precise errors when decoding a char from UTF-8, UTF-16 or u32 fails.

Feature flags:

(both require nightly) * ascii: Implement AsciiExt and integrate with ascii::Ascii. * clippy: Get extra warnings, see lib.rs for why I haven't fixed or allow()ed them.

The unit tests only work on nightly since they use encode_utf{8,16}() as a reference.

License

Licensed under either of

• Apache License, Version 2.0, (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)

at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.